Dortmund Helen cream and essence have no side effects if they are not allergic. It can only be used at night, which can make the spots fade and the skin will get better. Be sure to avoid light when using this.
Usage of Dortmund Helen Cream and Essence: After cleaning the skin, apply toner first, then essence, pour a proper amount of essence on the palm of your hand, fully warm it, evenly apply it to your face, and pat it to help absorption. After that, use a cream, apply the cream to your face in a spot way, then apply the cream evenly, supplemented by massage, so that the cream can be fully absorbed.